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.EN NSO -Ln M W El A au e 3. s M w C m o. W N -m M0 JOHN N. STURNER, OF BUFFALO, NEW YORK, ASSIGNOR OF ONE-HALF TO ANTHONY J. THROM, OF BUFFALO, NEW YORK.

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No. 802,243. Speccaton of Letters Patent. Patented Oct. 17, 1905.

Application filed May 8, 1905. Serial No. 259.326.

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Be it known that l, JOHN N. STURNER, a which extends from the outlet-nipple do\vncitizen of the United States, residing at Bufwardly toward the bottom of the chamber and falo, in the county of Erie and State of New opens at its lower end into the chamber at a 5 Yo1l ,liaveinvented anewandusefullmprovedistance below the inlet and outlet nipples.

ment in Oil-Separators, of which the follow- In the ordinary operation of the separator 60 lng 1s a specification. the oil-bear1ng water enters the chamber This invention relates to a separator for rethrough the inlet-nipple and lills the same. moving engine or other oil from water pre- Within the chamber the oil separates from IO paratory to delivering' the latter to a boiler. the water and rises to the top of the water at In devices for this purpose as heretofore conthe upper end of the chamber and is drawn 65 structed the oil was separated from the water olf from time to time by a blow-ofi pipe F, and prevented from entering' theboiler so long connecting' with the top of the chamber and as the supply of water was sufficiently plencontaining a valve f. The purified water detiful to fill the pipes or conduits; but when scends to the lower end of the chamber and is the supply of water was so deficient that the drawn olif.l through the drop-pipe, outlet-nip- 70 conduits or pipes were not filled with water ple, and delivery-pipe. Any sediment colthe level of the latter dropped to a point which lecting in the bottom of the separating-champermitted the oil ifioating on the same to be ber is removed when necessary by a blow-oil'I 2O drawn into the boiler, thus defeating the purpipe G, connecting with the bottom of the pose of the separator, and consequently injnrchamber and containing a valve g. 75 ing the boiler. The Water-supply sometimes becomes tem- The object of this invention is the producporarily deficient. and if no means were protion of a device for separating oil from water vided to prevent it the water and oil at this which is more particularly designed to be time would be entirely exhausted from the placed in the water-feed line or pipe between chamber and fed to the boiler, thus effecting 8O an open water-heater and a pump feeding the the latter injuriously. ln order to prevent boiler and which operates to separate the oil oil from being drawn in this manner into the contained in the water and prevent the same boiler when a deficient water-supply occurs,

from passing into the boiler regardless of means are provided for interrupting or breakwhether the water-supply is plentiful or deing the suction or effect of the pump before 85 ficient. l the level of the water in the separating-cham- In the accompanying drawings. Figure l is ber drops below the inlet and outlet nipples a vertical section of my improved oil-separathereof. The preferred means for this purtor. Fig. 2 is a horizontal section of the pose shown in the drawings are constructed same in line 2 2, Fig. 1. as follows: H represents a trap or safety pipe 9o Similar letters of reference indicate correor conduit arranged in the upper part of the spending parts throughout both views. separating-chamber and consisting of a long A represents the se parating-chamber, which vertical branch or section /awhich is connected is preferably of vertically-elongated form. at its lower end with the outlet-nipple of the This chamber is constructed in sections (t (d, chamber, and a short vertical branch or sec- 95 which are connected by bolts a2, the joint betion t, which is connected at its upper end tween the sections being' about midway ofiythe with the upper end of the long section, while height of the chamber. The lower part or its lower end is open and terminates at a dissection of the chamber is provided with an tance above the inlet and outlet nipples of the inlet-nipple B and an outlet-nipple C, which separatingchamber. The safety-pipe thus IOC are horizontally in line and preferably on ophas substantially the form of an inverted U, posite sides of the chamber. The inlet-nipone leg or branch of which is longer than the ple is connected by a pipe or conduit Z1 with other. As the water fills the inlet and outlet the water supplied from a heater or other conduits and rises in the separating-chamber source. The outlet-nipple is connected by a it also rises in both branches or sections of pipe or conduit c with the boiler or with the the trap and compresses the air confined in the pump whereby the water is delivered to the connected upper ends of the same, thereby boiler to be fed. Within the separating forming an air-plug, checleor partition which prevents the water from being drawn from the chamber through the short branch of the trap over into the long' branch thereof and out through the outlet thereof. The exit' of the water from the chamber is thus confined to the drop-pipe, whereby only purified water is withdrawn from the lower part of the chamber, leaving' the oil floating on top of the water undisturbed, thereby preventing' the oil from reaching the boiler'. 1f the supply of water for any reason becomes deficient, the level of the water in the chamber gradually lowers by the withdrawal of the water from the lower part of the chamber. As the water-level descends in the chamber it also lowers in the branches of the trap. Thile the water thus lowers the lower end of the short branch of the trap is uncovered, thereby placing this branch, which is now empty, in communication with the empty upper part of the separating-chamber. Vhen the level of the water in continuing its descent drops below the top of the inlet and outlet nipples of the chamber, air or steam is carried from the inlet-nipple successively through the upper part of the separating-chamber, trap-pipe, and outletnipple to'the boiler or to the pump which feeds the water to the boiler. /Vhen this occurs, the pump loses its priming' on account of becoming either air or steam bound and immediately ceases to withdraw water from the chamber and deliver the same to the boiler. This stopping of the feeding operation of the pump occurs the instant the liquid-level in the chamber drops below the top of the inlet and outlet nipples and before this liquidlevel reaches the lower end of the drop-pipe. The oil which is floating on top of the water is thus retained in the separating-chamber and prevented from being forced or drawn by the pump from the chamber with the last of the water in the same and delivered to the boiler, whereby injury to the latter which otherwise would result is positively avoided. Vhen the normal supply of water is again restored, the same rises in the separating-chamber and lifts the oil to the top thereof, when the same can be blown off when required, and the lower ends of the branches of the trap are again sealed by the water, so as to form a partition or body of air in the upper end of the same, thus placing the apparatus in condition for resuming the feed of water to the boiler and the separation of the oil therefrom. y

For the purpose of enabling' the attendant to determine the level of the water and oil in the chamber the latter is provided with a visual indicator consisting, preferably, of two sections I l of a glass gage, which connect with the upper and lower parts of the chainber, as shown in the drawings.

I claim as my invention l. A device for separating oil from water comprising a closed separating-chamber having a liquid-inlet and a liquid-outlet, a droppipe extending from said outlet into the chamber below said inlet, and a safety-pipe having its opposite ends opening into said outlet and into the chamber above the lower end of said drop-pipe, substantially as set forth.

2. A device for separating oil from water comprising a chamber having an inlet and an out-let, a drop-pipe extending' from said outlet downwardly into the lower part of said chamber below said inlet, and a safety pipe or conduit having its opposite ends opening' into said outlet and the upper part of said chamber, substantially as set forth.

3. A device for separating oil from water comprising a'chamber having a liquid-inlet and a liquid-outlet horizontally in line, a droppipe extending' from said outlet downwardly into the lower part of said chamber below said inlet, and a safety-pipe having the form of an inverted U one branch of which opens at its lower end into said outlet while itsl other branch opens into the upper part of said chamber, substantially as set forth.

4. A device for separating oil from water comprising a chamber having` a liquid-inlet and a liquid-outlet horizontally in line, a droppipe extending from said outlet downwardly into the lower part of said chamber bclow said inlet, and a safety-pipe having' the form of an inverted U one branch of which is long and opens into said outlet while the other branch is short and opens into the upper part of said chamber, substantially as set forth.

5. A device for separating* oil from water comprising a chamber having a liquid-inlet and a liquid-outlet on horizontally opposite sides, a sediment blow-ott1 at its bottom and an oil blow-offl at its top, a drop-pipe extending from said outlet downwardly in said chamber below said inlet and outlet, and a safety-pipe of inverted-U form arranged in the upper part of said chamber and having a long branch which connects at its lower end with said outlet and a short branch which opens at its lower end into the chamber above said inlet, substantially as set forth.

W'itness my hand this 29th day of April, 19053 JOHN N. STURNER.

Witnesses:

THEO. L. Por?, E. M. GRAHAM.

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